Only experience is with a chainsaw attachment of said, Husky big power variety. They're not fast and you want no stretch rope but it's a helluva lot better than having to have 5 guys' pack out a bull during warm weather from that canyon!
Keep in mind you'll be hooking up multiple times depending on the distance, rope stretch, obstacles etc. Minimum 2 people to operate given a decent bull; one to run the winch, one to keep the hangups to a minimum.
We've also used them on snowmobiles over the "edge".
REM7600